Structural, optical and magnetic properties of nickel-doped copper sulphide diluted magnetic semiconductor nanoparticles for spintronic devices

In this study, we present systematic analyses of the impact of Ni doping on the structural, optical, and magnetic properties of CuS nanoparticles produced using the straightforward wet chemical co-precipitation approach with EDTA molecules as templates. To examine the chemical makeup of materials, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy were also employed. It is known that Ni-doped CuS nanoparticles have a hexagonal shape, which implies that Ni2+ can substitute for Cu2+ sites in the CuS lattice without creating a new phase. The optical characteristics were calculated based on the UV-Vis absorption measurements. The band edge and optical band gap for Ni-doped samples both get lower as the Ni concentration rises. When Ni dopant concentration is increased in the CuS host matrix, magnetic studies (at RT via M-H curve) demonstrate that 2% and 4% Ni doped CuS nanoparticles exhibit strong ferromagnetism at ambient temperature and transition to paramagnetic nature. The 2% and 4% Ni doped CuS nanoparticle results are highly suggested for the creation of spintronic devices.